… | |
… | |
22 | *---------------------------------------------------------------------*/ |
22 | *---------------------------------------------------------------------*/ |
23 | |
23 | |
24 | #include "../config.h" /* NECESSARY */ |
24 | #include "../config.h" /* NECESSARY */ |
25 | #include "rxvt.h" |
25 | #include "rxvt.h" |
26 | |
26 | |
27 | # include <cstdlib> |
27 | #include <cstdlib> |
28 | # include <cstring> |
28 | #include <cstring> |
29 | |
29 | |
30 | #ifdef HAVE_SYS_TYPES_H |
|
|
31 | # include <sys/types.h> |
30 | #include <sys/types.h> |
32 | #endif |
31 | #include <sys/socket.h> |
33 | #ifdef HAVE_UNISTD_H |
|
|
34 | # include <unistd.h> |
32 | #include <unistd.h> |
35 | #endif |
|
|
36 | #ifdef HAVE_FCNTL_H |
|
|
37 | # include <fcntl.h> |
33 | #include <fcntl.h> |
38 | #endif |
34 | |
39 | #ifdef HAVE_SYS_IOCTL_H |
35 | #ifdef HAVE_SYS_IOCTL_H |
40 | # include <sys/ioctl.h> |
36 | # include <sys/ioctl.h> |
41 | #endif |
37 | #endif |
42 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
38 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
43 | # include <sys/stropts.h> /* for I_PUSH */ |
39 | # include <sys/stropts.h> /* for I_PUSH */ |
… | |
… | |
53 | # include <util.h> |
49 | # include <util.h> |
54 | #endif |
50 | #endif |
55 | |
51 | |
56 | #include <cstdio> |
52 | #include <cstdio> |
57 | #include <grp.h> |
53 | #include <grp.h> |
|
|
54 | |
|
|
55 | #include "rxvtutil.h" |
|
|
56 | #include "fdpass.h" |
|
|
57 | #include "ptytty.h" |
|
|
58 | |
|
|
59 | ///////////////////////////////////////////////////////////////////////////// |
58 | |
60 | |
59 | /* ------------------------------------------------------------------------- * |
61 | /* ------------------------------------------------------------------------- * |
60 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
61 | * ------------------------------------------------------------------------- */ |
63 | * ------------------------------------------------------------------------- */ |
62 | /* |
64 | /* |
… | |
… | |
70 | int pfd; |
72 | int pfd; |
71 | |
73 | |
72 | #ifdef PTYS_ARE_OPENPTY |
74 | #ifdef PTYS_ARE_OPENPTY |
73 | char tty_name[sizeof "/dev/pts/????\0"]; |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
74 | |
76 | |
75 | rxvt_privileges(RESTORE); |
|
|
76 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
77 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
77 | rxvt_privileges(IGNORE); |
|
|
78 | |
78 | |
79 | if (res != -1) |
79 | if (res != -1) |
80 | { |
80 | { |
81 | *ttydev = strdup (tty_name); |
81 | *ttydev = strdup (tty_name); |
82 | return pfd; |
82 | return pfd; |
… | |
… | |
218 | /*----------------------------------------------------------------------*/ |
218 | /*----------------------------------------------------------------------*/ |
219 | /* |
219 | /* |
220 | * Make our tty a controlling tty so that /dev/tty points to us |
220 | * Make our tty a controlling tty so that /dev/tty points to us |
221 | */ |
221 | */ |
222 | static int |
222 | static int |
223 | control_tty (int fd_tty, const char *ttydev) |
223 | control_tty (int fd_tty) |
224 | { |
224 | { |
225 | #ifndef __QNX__ |
|
|
226 | int fd; |
225 | int fd; |
227 | |
226 | |
228 | /* ---------------------------------------- */ |
227 | /* ---------------------------------------- */ |
229 | # ifdef HAVE_SETSID |
|
|
230 | setsid (); |
228 | setsid (); |
231 | # endif |
|
|
232 | # if defined(HAVE_SETPGID) |
|
|
233 | setpgid (0, 0); |
|
|
234 | # elif defined(HAVE_SETPGRP) |
|
|
235 | setpgrp (0, 0); |
|
|
236 | # endif |
|
|
237 | |
229 | |
238 | /* ---------------------------------------- */ |
230 | /* ---------------------------------------- */ |
239 | # ifdef TIOCNOTTY |
|
|
240 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
|
|
241 | if (fd >= 0) |
|
|
242 | { |
|
|
243 | ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ |
|
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244 | close (fd); |
|
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245 | } |
|
|
246 | # endif |
|
|
247 | |
|
|
248 | /* ---------------------------------------- */ |
|
|
249 | fd = open ("/dev/tty", O_RDWR | O_NOCTTY); |
|
|
250 | if (fd >= 0) |
|
|
251 | close (fd); /* ouch: still have controlling tty */ |
|
|
252 | |
|
|
253 | /* ---------------------------------------- */ |
|
|
254 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
231 | # if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
255 | /* |
232 | /* |
256 | * Push STREAMS modules: |
233 | * Push STREAMS modules: |
257 | * ptem: pseudo-terminal hardware emulation module. |
234 | * ptem: pseudo-terminal hardware emulation module. |
258 | * ldterm: standard terminal line discipline. |
235 | * ldterm: standard terminal line discipline. |
259 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
236 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
… | |
… | |
267 | * documentation is really unclear about whether it is any close () on |
244 | * documentation is really unclear about whether it is any close () on |
268 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
245 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
269 | * close () - on the master side which causes a hang up to be sent |
246 | * close () - on the master side which causes a hang up to be sent |
270 | * through - Geoff Wing |
247 | * through - Geoff Wing |
271 | */ |
248 | */ |
272 | # ifdef HAVE_ISASTREAM |
249 | # ifdef HAVE_ISASTREAM |
273 | if (isastream (fd_tty) == 1) |
250 | if (isastream (fd_tty) == 1) |
274 | # endif |
251 | # endif |
275 | { |
252 | { |
276 | ioctl (fd_tty, I_PUSH, "ptem"); |
253 | ioctl (fd_tty, I_PUSH, "ptem"); |
277 | ioctl (fd_tty, I_PUSH, "ldterm"); |
254 | ioctl (fd_tty, I_PUSH, "ldterm"); |
278 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
255 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
279 | } |
256 | } |
280 | #endif |
257 | # endif |
281 | /* ---------------------------------------- */ |
258 | /* ---------------------------------------- */ |
282 | # if defined(TIOCSCTTY) |
|
|
283 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
259 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
284 | # elif defined(TIOCSETCTTY) |
|
|
285 | fd = ioctl (fd_tty, TIOCSETCTTY, NULL); |
|
|
286 | # else |
|
|
287 | fd = open (ttydev, O_RDWR); |
|
|
288 | if (fd >= 0) |
|
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289 | close (fd); |
|
|
290 | # endif |
|
|
291 | /* ---------------------------------------- */ |
260 | /* ---------------------------------------- */ |
292 | fd = open ("/dev/tty", O_WRONLY); |
261 | fd = open ("/dev/tty", O_WRONLY); |
293 | if (fd < 0) |
262 | if (fd < 0) |
294 | return -1; /* fatal */ |
263 | return -1; /* fatal */ |
295 | close (fd); |
264 | close (fd); |
296 | /* ---------------------------------------- */ |
265 | /* ---------------------------------------- */ |
297 | #endif /* ! __QNX__ */ |
|
|
298 | |
266 | |
299 | return 0; |
267 | return 0; |
300 | } |
268 | } |
|
|
269 | |
|
|
270 | void |
|
|
271 | rxvt_ptytty::close_tty () |
|
|
272 | { |
|
|
273 | if (tty < 0) |
|
|
274 | return; |
|
|
275 | |
|
|
276 | close (tty); |
|
|
277 | tty = -1; |
|
|
278 | } |
|
|
279 | |
|
|
280 | bool |
|
|
281 | rxvt_ptytty::make_controlling_tty () |
|
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282 | { |
|
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283 | return control_tty (tty) >= 0; |
|
|
284 | } |
|
|
285 | |
|
|
286 | void |
|
|
287 | rxvt_ptytty::set_utf8_mode (bool on) |
|
|
288 | { |
|
|
289 | #ifdef IUTF8 |
|
|
290 | if (pty < 0) |
|
|
291 | return; |
|
|
292 | |
|
|
293 | struct termios tio; |
|
|
294 | |
|
|
295 | if (tcgetattr (pty, &tio) != -1) |
|
|
296 | { |
|
|
297 | tcflag_t new_cflag = tio.c_iflag; |
|
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298 | |
|
|
299 | if (on) |
|
|
300 | new_cflag |= IUTF8; |
|
|
301 | else |
|
|
302 | new_cflag &= ~IUTF8; |
|
|
303 | |
|
|
304 | if (new_cflag != tio.c_iflag) |
|
|
305 | { |
|
|
306 | tio.c_iflag = new_cflag; |
|
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307 | tcsetattr (pty, TCSANOW, &tio); |
|
|
308 | } |
|
|
309 | } |
|
|
310 | #endif |
|
|
311 | } |
|
|
312 | |
|
|
313 | ///////////////////////////////////////////////////////////////////////////// |
301 | |
314 | |
302 | #ifndef NO_SETOWNER_TTYDEV |
315 | #ifndef NO_SETOWNER_TTYDEV |
303 | static struct ttyconf { |
316 | static struct ttyconf { |
304 | gid_t gid; |
317 | gid_t gid; |
305 | mode_t mode; |
318 | mode_t mode; |
… | |
… | |
321 | gid = getgid (); |
334 | gid = getgid (); |
322 | } |
335 | } |
323 | } |
336 | } |
324 | } ttyconf; |
337 | } ttyconf; |
325 | |
338 | |
|
|
339 | ///////////////////////////////////////////////////////////////////////////// |
|
|
340 | |
326 | void |
341 | void |
327 | rxvt_ptytty::privileges (rxvt_privaction action) |
342 | rxvt_ptytty_unix::privileges (rxvt_privaction action) |
328 | { |
343 | { |
329 | if (!name || !*name) |
344 | if (!name || !*name) |
330 | return; |
345 | return; |
331 | |
|
|
332 | rxvt_privileges (RESTORE); |
|
|
333 | |
346 | |
334 | if (action == SAVE) |
347 | if (action == SAVE) |
335 | { |
348 | { |
336 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
349 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
337 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
350 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
… | |
… | |
360 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
373 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
361 | chown (name, 0, 0); |
374 | chown (name, 0, 0); |
362 | # endif |
375 | # endif |
363 | |
376 | |
364 | } |
377 | } |
365 | |
|
|
366 | rxvt_privileges (IGNORE); |
|
|
367 | } |
378 | } |
368 | #endif |
379 | #endif |
369 | |
380 | |
370 | rxvt_ptytty::rxvt_ptytty () |
381 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
371 | { |
382 | { |
372 | pty = tty = -1; |
383 | pty = tty = -1; |
373 | name = 0; |
384 | name = 0; |
374 | #ifndef NO_SETOWNER_TTYDEV |
385 | #ifndef NO_SETOWNER_TTYDEV |
375 | saved = false; |
386 | saved = false; |
… | |
… | |
377 | #if UTMP_SUPPORT |
388 | #if UTMP_SUPPORT |
378 | cmd_pid = 0; |
389 | cmd_pid = 0; |
379 | #endif |
390 | #endif |
380 | } |
391 | } |
381 | |
392 | |
382 | rxvt_ptytty::~rxvt_ptytty () |
393 | rxvt_ptytty_unix::~rxvt_ptytty_unix () |
383 | { |
394 | { |
384 | logout (); |
395 | logout (); |
385 | put (); |
396 | put (); |
386 | } |
397 | } |
387 | |
398 | |
388 | void |
399 | void |
389 | |
|
|
390 | rxvt_ptytty::close_tty () |
|
|
391 | { |
|
|
392 | if (tty < 0) |
|
|
393 | return; |
|
|
394 | |
|
|
395 | close (tty); |
|
|
396 | tty = -1; |
|
|
397 | } |
|
|
398 | |
|
|
399 | void |
|
|
400 | rxvt_ptytty::put () |
400 | rxvt_ptytty_unix::put () |
401 | { |
401 | { |
402 | #ifndef NO_SETOWNER_TTYDEV |
402 | #ifndef NO_SETOWNER_TTYDEV |
403 | privileges (RESTORE); |
403 | privileges (RESTORE); |
404 | #endif |
404 | #endif |
405 | |
405 | |
… | |
… | |
410 | pty = tty = -1; |
410 | pty = tty = -1; |
411 | name = 0; |
411 | name = 0; |
412 | } |
412 | } |
413 | |
413 | |
414 | bool |
414 | bool |
415 | rxvt_ptytty::make_controlling_tty () |
|
|
416 | { |
|
|
417 | return control_tty (tty, name) >= 0; |
|
|
418 | } |
|
|
419 | |
|
|
420 | bool |
|
|
421 | rxvt_ptytty::get () |
415 | rxvt_ptytty_unix::get () |
422 | { |
416 | { |
423 | /* get master (pty) */ |
417 | /* get master (pty) */ |
424 | if ((pty = get_pty (&tty, &name)) < 0) |
418 | if ((pty = get_pty (&tty, &name)) < 0) |
425 | return false; |
419 | return false; |
426 | |
420 | |
… | |
… | |
441 | } |
435 | } |
442 | |
436 | |
443 | return true; |
437 | return true; |
444 | } |
438 | } |
445 | |
439 | |
|
|
440 | #if PTYTTY_HELPER |
|
|
441 | |
|
|
442 | static int sock_fd; |
|
|
443 | static int pid; |
|
|
444 | |
|
|
445 | struct command |
|
|
446 | { |
|
|
447 | enum { get, login, destroy } type; |
|
|
448 | |
|
|
449 | rxvt_ptytty *id; |
|
|
450 | |
|
|
451 | bool login_shell; |
|
|
452 | int cmd_pid; |
|
|
453 | char hostname[512]; // arbitrary, but should be plenty |
|
|
454 | }; |
|
|
455 | |
|
|
456 | struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty |
|
|
457 | { |
|
|
458 | rxvt_ptytty *id; |
|
|
459 | |
|
|
460 | ~rxvt_ptytty_proxy (); |
|
|
461 | |
|
|
462 | bool get (); |
|
|
463 | void login (int cmd_pid, bool login_shell, const char *hostname); |
|
|
464 | }; |
|
|
465 | |
|
|
466 | bool |
|
|
467 | rxvt_ptytty_proxy::get () |
|
|
468 | { |
|
|
469 | command cmd; |
|
|
470 | |
|
|
471 | cmd.type = command::get; |
|
|
472 | |
|
|
473 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
474 | |
|
|
475 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
|
|
476 | rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n"); |
|
|
477 | |
|
|
478 | if (!id) |
|
|
479 | return false; |
|
|
480 | |
|
|
481 | if ((pty = rxvt_recv_fd (sock_fd)) < 0 |
|
|
482 | || (tty = rxvt_recv_fd (sock_fd)) < 0) |
|
|
483 | rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
|
|
484 | |
|
|
485 | return true; |
|
|
486 | } |
|
|
487 | |
446 | void |
488 | void |
447 | rxvt_ptytty::set_utf8_mode (bool on) |
489 | rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
448 | { |
490 | { |
449 | #ifdef IUTF8 |
491 | command cmd; |
450 | if (pty < 0) |
|
|
451 | return; |
|
|
452 | |
492 | |
453 | struct termios tio; |
493 | cmd.type = command::login; |
|
|
494 | cmd.id = id; |
|
|
495 | cmd.cmd_pid = cmd_pid; |
|
|
496 | cmd.login_shell = login_shell; |
|
|
497 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
454 | |
498 | |
455 | if (tcgetattr (pty, &tio) != -1) |
499 | write (sock_fd, &cmd, sizeof (cmd)); |
456 | { |
500 | } |
457 | tcflag_t new_cflag = tio.c_iflag; |
|
|
458 | |
501 | |
459 | if (on) |
502 | rxvt_ptytty_proxy::~rxvt_ptytty_proxy () |
460 | new_cflag |= IUTF8; |
503 | { |
|
|
504 | command cmd; |
|
|
505 | |
|
|
506 | cmd.type = command::destroy; |
|
|
507 | cmd.id = id; |
|
|
508 | |
|
|
509 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
510 | } |
|
|
511 | |
|
|
512 | static |
|
|
513 | void serve () |
|
|
514 | { |
|
|
515 | command cmd; |
|
|
516 | vector<rxvt_ptytty *> ptys; |
|
|
517 | |
|
|
518 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
|
|
519 | { |
|
|
520 | if (cmd.type == command::get) |
|
|
521 | { |
|
|
522 | // -> id ptyfd ttyfd |
|
|
523 | cmd.id = new rxvt_ptytty_unix; |
|
|
524 | |
|
|
525 | if (cmd.id->get ()) |
|
|
526 | { |
|
|
527 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
528 | ptys.push_back (cmd.id); |
|
|
529 | |
|
|
530 | rxvt_send_fd (sock_fd, cmd.id->pty); |
|
|
531 | rxvt_send_fd (sock_fd, cmd.id->tty); |
|
|
532 | } |
|
|
533 | else |
|
|
534 | { |
|
|
535 | delete cmd.id; |
|
|
536 | cmd.id = 0; |
|
|
537 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
538 | } |
|
|
539 | } |
|
|
540 | else if (cmd.type == command::login) |
|
|
541 | { |
|
|
542 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
|
|
543 | { |
|
|
544 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
|
|
545 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
|
|
546 | } |
|
|
547 | } |
|
|
548 | else if (cmd.type == command::destroy) |
|
|
549 | { |
|
|
550 | rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
|
|
551 | |
|
|
552 | if (pty) |
|
|
553 | { |
|
|
554 | delete *pty; |
|
|
555 | ptys.erase (pty); |
|
|
556 | } |
|
|
557 | } |
461 | else |
558 | else |
462 | new_cflag &= ~IUTF8; |
559 | break; |
|
|
560 | } |
463 | |
561 | |
464 | if (new_cflag != tio.c_iflag) |
562 | // destroy all ptys |
465 | { |
563 | for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
466 | tio.c_iflag = new_cflag; |
564 | delete *i; |
467 | tcsetattr (pty, TCSANOW, &tio); |
565 | } |
468 | } |
566 | |
|
|
567 | void rxvt_ptytty_server () |
|
|
568 | { |
|
|
569 | int sv[2]; |
|
|
570 | |
|
|
571 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
|
572 | rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
|
573 | |
|
|
574 | pid = fork (); |
|
|
575 | |
|
|
576 | if (pid < 0) |
|
|
577 | rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
|
578 | |
|
|
579 | if (pid) |
469 | } |
580 | { |
|
|
581 | // client, urxvt |
|
|
582 | sock_fd = sv[0]; |
|
|
583 | close (sv[1]); |
|
|
584 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
|
585 | } |
|
|
586 | else |
|
|
587 | { |
|
|
588 | setgid (getegid ()); |
|
|
589 | setuid (geteuid ()); |
|
|
590 | |
|
|
591 | // server, pty-helper |
|
|
592 | sock_fd = sv[1]; |
|
|
593 | |
|
|
594 | for (int fd = 0; fd < 1023; fd++) |
|
|
595 | if (fd != sock_fd && fd != 1) |
|
|
596 | close (fd); |
|
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597 | |
|
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598 | serve (); |
|
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599 | _exit (EXIT_SUCCESS); |
|
|
600 | } |
|
|
601 | } |
470 | #endif |
602 | #endif |
|
|
603 | |
|
|
604 | // a "factory" *g* |
|
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605 | rxvt_ptytty * |
|
|
606 | rxvt_new_ptytty () |
|
|
607 | { |
|
|
608 | #if PTYTTY_HELPER |
|
|
609 | if (pid > 0) |
|
|
610 | // use helper process |
|
|
611 | return new rxvt_ptytty_proxy; |
|
|
612 | else |
|
|
613 | #endif |
|
|
614 | return new rxvt_ptytty_unix; |
471 | } |
615 | } |
472 | |
616 | |
473 | /*----------------------- end-of-file (C source) -----------------------*/ |
617 | /*----------------------- end-of-file (C source) -----------------------*/ |
474 | |
618 | |